We're sorry you had a scare at your show. Master Fader only updates the firmware the first time a new version of the app connects to a mixer. So if you downloaded an update from the App Store before a gig, you have to be sure to connect to the mixer and update the hardware well before a gig. This is why we recommend you never update the Master Fader app right before a show. Also, if your settings were stored in a snapshot, they should have been easily recalled.